RoboPol: A four-channel optical imaging polarimeter

A. N. Ramaprakash, C. V. Rajarshi, H. K. Das, P. Khodade, D. Modi, G. Panopoulou, S. Maharana, D. Blinov, E. Angelakis, C. Casadio, L. Fuhrmann, T. Hovatta, S. Kiehlmann, O. G. King, N. Kylafis, A. Kougentakis, A. Kus, A. Mahabal, A. Marecki, I. MyserlisG. Paterakis, E. Paleologou, I. Liodakis, I. Papadakis, I. Papamastorakis, V. Pavlidou, E. Pazderski, T. J. Pearson, A. C.S. Readhead, P. Reig, A. Słowikowska, K. Tassis, J. A. Zensus

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

14 Sitaatiot (Scopus)
45 Lataukset (Pure)

Abstrakti

We present the design and performance of RoboPol, a four-channel optical polarimeter operating at the Skinakas Observatory in Crete, Greece. RoboPol is capable of measuring both relative linear Stokes parameters q and u (and the total intensity I) in one sky exposure. Though primarily used to measure the polarization of point sources in the R band, the instrument features additional filters (B, V, and I), enabling multiwavelength imaging polarimetry over a large field of view (13.6 × 13.6). We demonstrate the accuracy and stability of the instrument throughout its 5 yr of operation. Best performance is achieved within the central region of the field of view and in the R band. For such measurements the systematic uncertainty is below 0.1 per cent in fractional linear polarization, p (0.05 per cent maximum likelihood). Throughout all observing seasons the instrumental polarization varies within 0.1 per cent in p and within ∼1 in polarization angle.

AlkuperäiskieliEnglanti
Sivut2355-2366
Sivumäärä12
JulkaisuMonthly Notices of the Royal Astronomical Society
Vuosikerta485
Numero2
DOI - pysyväislinkit
TilaJulkaistu - toukok. 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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